Socket for vacuum tubes



P 18, 1933 R. B. BENJAMIN 133049552 SOCKET FOR VACUUM TUBES Filed Noy'.30, 1928 (///////////////////'///A?//////////AhV//,. mum

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Patented Apr. 18; 1933 I UNITED STATES [PATENT OFFICE REUBEN B.BENJAMIN, CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO HUGH H.153?, OF PHILADELPHIA, PENNSYLVANIA SOCKET FOR VACUUM TUBES Applicationfiled November 30, 1 328. Serial No. 322,687.

My invention relates to sockets for vacuum tubes and the like.

One of the objects of my invention is to provide an improved socketwhich will ensure good contact with the prongs of the tube, which willbe easily-wired, which can be readily mounted on a panel, which willhave a dead front, and which will be cheap to manufacture.

Further objects will appear from the description and claims.

In the drawing, in which an embodiment of my invention is shown Figure1- is a front view of the socket;

15 Fig. 2 is a rear view;

Fig. 3 is a section on the line 3-3 of Fig. 2; and

Fig. 4 is a perspective view of the contact and wiring terminal member.

Referring to the drawing in detail, the construction shown comprises atwo-part insulating base land a plurality of wiring terminal andcontacts members 2 mounted thereon. The insulating base is formed of twoplates 3 and 4 of insulating material, such as fiber or the like, heldtogether by a pair of eyelets 5 which may provide means forattachment toa panel or frame. The contact and wiring terminal members 2 areassembled on the inner base part 4 before the two parts of the base aresecured together so that the securing of the two base parts togetherholds these members in assembled position. The members are assembledwith respect to the inner base by inserting the U-shaped contactportions 6 through the openings 7 in the base from the front sidethereof, the wiring'terminal portion 8 being sprung so as to enter theopenings 9 in the base provided therefor so that when the members arepushed to their final position the portions connecting the contactportions 6 and wiring terminals will lie flat against a portion of thebase between the contact-opening 7 and the wiring terminal opening 9.The other end of the strip forming this member is bent to provide asecuring foot portion 11 and a positioning finger 12 which extends intoan aperture 13 in the base portion 4 to definitely position this end ofthe strip. The strip may be formed of any suitable springy metal oralloy, such as brass, and the wiring terminal portion may be tinned, ifdesired, to provide an easysoldering connection. I

In use, the prongs of the tube are inserted through the openings 14: inthe front insulating shield 3 and enter between the inwardly sprungportions of the U-shaped contact loops 6 which are formed so that theymust be sprung apartslightly when the contact pins are inserted. Thisinsures perfect contact and provides a rugged construction which is easyto assemble and wire and costs very little to manufacture.

I claim: I

1. A tubesocket construction comprising an insulating base plate havingan aperture therethrough, a second apertured plate and a U-shaped springcontact between the arms of which the contact pin enters, and having itsconnecting portion at the inner end, said U-shaped spring contact beinginsertable through the aperture in the base plate from the front sidethereof and each arm of said U shaped spring contact having a securingtip overlying the base late adjacent said aperture, and clamped betweenthe plates, said base plate having a second aperture adjacent said firstaperture and one of the overlying portions of the contact having awiring terminal extension extending through said second opening to therear of the'base plate, the arms of said U-shaped spring contact beingbowed toward each other whereby the intermediate portions of the opposedarms are closer together than the inner and outer portions and thusexert a spring pressure on the inserted contact pin.

2. A tube socket construction comprising an insulating base plate havingan aperture therethrough, a second apertured plate and a'U-shaped springcontact between the arms of which the contact pin enters, and having itsconnecting portion at the inner end, said U-shaped spring contact being'insertible through the aperture in the base plate from the front sidethereof and each arm of said U shaped spring contact having a securingtip overlying the base plate adjacent said aperture, and clampedbetween] the plates, said base plate having an aperture adjacent saidcontact aperture and one of saidoverlying portions having an extensiontip extending into said aperture from the front side of the base to holdthe tip against lat-.

eral movement, said base plate having another aperture adjacent thecontact aperture at the rear of the base and the other of said overlyingportions having a wiring terminal extension extendingthrough saidaperture to the rear of the base plate, the arms of said U-shaped springcontact being bowed v v sulation, one having a plurality of aperturestoward each other whereby the intermediate portions of the opposed armsare closer together than the inner and outer portions and thus exert aspring pressure on the inserted contact pin.

3. In a socket receptacle, a plurality of clips, a pair of plates ofinsulation material, one plate having spaced openings for the clips andthe other perforated in line with the openings, contact structureconnect; ed with said clips, each'comprising a U- shaped contact memberextending'through one of the openings and-having the ends of the Uspread away from each other, one end comprising an intermediate portionof that" clip and having a soldering lugconnected thereto-and both endsclamped between the two plates.

4. In a socket receptacle, two plates of infor plug passage and for theinsertion of contact clips, a plurality of contact clips,

, one in each aperture, having anchoring parts turned in oppositedirections on diametrally opposite sides of the apertures to lie betweentheplates and be clamped between them, one

of them having a projection directed laterally from the plane betweenthe plates to enter one plate and to lock against withdrawal parallel-tothe plates and the other havin a terminal soldering connection extendingypnd the clamped portion and through one p ate.

In witness whereof, I have hereunto subscribed my name.

REUBEN B. BENJAMIN?

